import React, { Component } from 'react'

export default class Child extends Component {

  state = {
    users: [
      {id: '001', name: 'tom', age: 18},
      {id: '002', name: 'tom2', age: 19},
      {id: '003', name: 'tom3', age: 20}
    ]
    // users: 'abc'
  }

  render() {
    return (
      <div>
        <h2>我是Child组件</h2>
        {
          this.state.users.map((userObj) => {
          return <h4 key={userObj.id}>{userObj.name} ---- {userObj.age}</h4>
          })
        }
      </div>
    )
  }
}
